A healthy adult heart is about the size of two fists and looks like a piece of red meat. But in overweight people, it can look yellow because of fat.

• 健康的成年人心脏大约有两个拳头那么大，看起来就向一块红色的牛肉。但是超重人士的心脏由于脂肪原因看起来会是黄色的。